{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["Disease", "Chemical"], "input": "Cauda equina syndrome after spinal anaesthesia with hyperbaric 5 % lignocaine : a review of six cases of cauda equina syndrome reported to the Swedish Pharmaceutical Insurance 1993 - 1997 ."}
{"Disease": ["Cauda equina syndrome", "cauda equina syndrome"], "Chemical": ["lignocaine"]}